import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;

/**
 * @ClassName TestCV
 * @Description: TODO
 * @Author hl
 * @Date 2020/9/7
 * @Version V1.0
 **/
class TestCV{
  static  int count1=0;
  private static TestCV testCV=new TestCV();
  static int count2=1;
  static int count3=3;
  static {
      count3++;
  }
  private TestCV(){
      count1++;
      count2++;
      ++count3;
  }
  static TestCV getInstance(){return testCV;}

}
class Test{
    public static void main(String[] args) {
        TestCV testCV=TestCV.getInstance();
        System.out.println("count1="+TestCV.count1);
        System.out.println("count2="+TestCV.count2);
        System.out.println("count3="+TestCV.count3);
    }
}
